According to L’Equipe, the club filed their complaint through Parisian firm Dupond-Moretti & Vey.

Founding Partner Antoine Vey said the French club “could be accused of complicity in crime.”

A Cardiff City FC spokesperson said: “CCFC has been clear throughout the past 12 months that a full investigation of the facts leading up to the tragedy is required.

“Not only to fully understand what led to the downing of the Piper PA-46 Malibu plane, but to answer the wider questions that have been highlighted in this case, specifically related to the use of illegal flights in the football industry and the role of intermediaries in player transfers.

Cardiff City players pay tribute to Sala.
Picture:
PA

“As a result of our investigation we believe there is sufficient evidence of wrongdoing that necessitates investigation by the French authorities of those responsible for the arrangement of the transfer on behalf of FC Nantes and for arranging the doomed flight.

"We have therefore passed over information to the Parquet de Nantes to assist their efforts.

“We remain committed to establishing the full facts and adhering to any final decision on our financial liability in the transfer.”